Kaley Cuoco displays impressively toned physique in a bikini as she poses with Big Bang co-star for hilarious snap after admitting to boob job at 18

Kaley Cuoco showed off her impossibly toned physique as she stripped down to a revealing bikini for a funny Instagram photo on Thursday.

Just days after revealing that she had a boob job at the tender age of 18 - a decision she says was the 'best I ever made' - as she covered the May issue of Cosmopolitan magazine, the Big Bang Theory star peeled off her clothing for a happy snap with recurring guest star Wil Wheaton.

The 28-year-old revealed her rock-hard abs and bulging biceps in the black, purple and silver two-piece, though she partially retained some of her modesty with a bright pink sarong tied low around her waist.

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'In honor of tonight's @thebigbangtheory__ Wil Wheaton and I making a "movie" :)': Kaley Cuoco shared a rather revealing and hilarious photo on Instagram on Thursday, just days after she admitted to having a boob job at 18 - a decision she says was the 'best I ever made'

Her long golden tresses flowed in cascading curls down around her shoulders, while her make-up was perfectly applied in preparation for filming, featuring pretty pink hues.

Interestingly, she also donned a pair of furry black gorilla gloves, as she pointed at her pal with a rather odd expression on her face.

Wil, meanwhile, was dressed similarly - not to mention hilariously - to match his co-star.

The 41-year-old was clad in a bright red gorilla suit, with a green and white polka-dot bikini worn over the top.

Now and then: The star pictured in March last year (left) and back in 2003, prior to her cosmetic enhancement

He chose to forgo the accompanying mask, holding it in his hand instead as he raised one eyebrow at the camera.

'In
honor of tonight's @thebigbangtheory__ Wil Wheaton and I making a
"movie" :),' the newlywed tweeted in explanation, while she also
referred to the pair as 'dumb and dumber' on Twitter.

Meanwhile,
after celebrating three months of wedded bliss with tennis pro husband
Ryan Sweeting on March 31, the pretty blonde shared several photos of the couple on
social media.

One of which she captioned, 'Family hike :)' as they took their two beloved dogs, Norman and Shirley, for a hike.

Cover girl! The 28-year-old was thrilled to land her first Cosmo cover, opening up during the ensuing interview about her love life, marriage and career, while also showing off her enviably toned body in the stunning shoot

'@ryansweething being such a good husband ;)': On Friday, the actress shared a photo of her husband of three months, pro tennis player Ryan Sweeting, proudly picking up four copies of her Cosmo issue during a trip to the supermarket

The
26-year-old athlete also proved to be a great, supportive husband as he
picked up four copies of her Cosmo issue during a trip to the
supermarket.

Kaley did a little self-promotion, too, posting a photo of her being photobombed by
a magazine rack full of her issue as she sat typing on her phone.

In
her new interview - the first time she's appeared on the cover of the
women's magazine - the comedic actress revealed she underwent the
invasive breast augmentation surgery while starring in the sitcom 8 Simple Rules back in 2004.

The actress also spoke candidly about her brief
romance with Henry Cavill, her marriage to tennis ace Ryan Sweeting and
her renewed friendship with Big Bang co-star and former boyfriend Johnny
Galecki.

A little self-promotion never hurt anybody: The star even shared a snap of her being photobombed by a magazine stand full of her issue as she typed away on her phone in the foreground

'Family
hike :)' Just days after celebrating their three-month wedding
anniversary, Kaley and Ryan headed out for a hike with their two beloved
dogs, Norman and Shirley

Her brief romance with Cavill last year garnered the star a slew of attention, which she called 'crazy.'

'I had no-one following me until I
met Superman,' she told the publication. 'I've
been in this business for 20 years, and my whole life, I could go
anywhere, do anything.

'There had not been one paparazzi
photo of me until, like, seven months ago.'

The bubbly blonde looked giddy with
excitement as she posed for the magazine, describing landing the cover a
'dream come true'.

'Sure Norman, of course I'll take a selfie with you, duh': The star regularly takes selfies with her canine companions to pass the time

Equine affection: But her love isn't limited to dogs, with the avid horse rider also sharing this sweet smooch with her 'buddy' Thor on Wednesday

She
showed off the hard-earned results of her yoga and fitness classes in
tiny denim shorts, making way for her toned and tanned pins to stand
tall in black and white polka dot wedge sandals.

In
one shot by photographer Eric Ray Davidson, Kaley flashed a black bra
beneath a slinky white tank, while in another, her white bra was seen
poking out of her black tube top, creating an element of edge for the
comedic actress.

The
sitcom star flashes her rock solid midriff in the cover photo itself,
pulling a grey tank to the side and revealing her giant diamond
engagement ring with her left hand strategically placed on her hip.

Her
long blonde tresses were styled in messy beached-out waves for the
playful shoot, revealing the actress in various states of happiness.

'It was the best decision I ever made': The bubbly blonde - pictured here in the May issue of Cosmopolitan - has admitted she underwent breast augmentation aged 18 in the accompanying interview, in which she displays her figure in a number of sexy outfits

'Nobody followed me until I met Superman!' Kaley said Henry Cavill made her famous after their 10-day fling last year, though she laments the attention she received during that brief time

The star had plenty to say about her recent marriage to tennis pro Ryan Sweeting this past New Year's Eve.

'I admit it happened fast, but that's who I am,' Kaley explained. 'When we met, I knew he was The One.'

And she also acknowledged the shock factor of her whirlwind romance, saying: 'Getting engaged so fast, I knew people were going to
think it was so ridiculous.'

Speaking about the wedding day itself, she gushed: 'I felt like a rock
star and a badass. What was amazing in that room, it was so full of
love. It was like nothing I’d ever been to before, and it was exactly
what we wanted it to be.'

'It was the eighth wonder of the world,' she boldly declared. 'The greatest wedding of all time.'

The two-week romance: Kaley dated Superman star Henry Cavill, pictured here in July 2013, for a very brief period, during which she became a fixture in the press, having previously lived a relatively private life

On the topic of her ex-boyfriends,
the actress also spoke up about renewing her friendship with Big Bang Theory co-star Johnny
Galecki after the breakdown of their romantic relationship.

Kaley admitted that after the breakup, 'it took a minute, a bit of awkwardness.'

But that didn't last, apparently.

'By
the grace of God, we became best buddies and moved on in such an
elegant way,' she said of the actor responsible for portraying Leonard
Hofstadter in the popular CBS series.

'He's one of my closest friends. He was in the front row of my wedding with a huge smile on his face,' she added.

'He's one of my closest friends': Kaley also dated Big Bang co-star Johnny Galecki, pictured here in June 2013 at the Critics' Choice Awards in LA, for two years on the down low, but insists they get along famously since their split

Staying true to her signature style
of being an open book, Kaley admitted that she is 'obsessed' with
reading about herself on the internet.

She
revealed that after she started paying attention to comments written
about her, she thought: 'Maybe I need to make more of an effort and not
go out in my UGGs and be disgusting.'

'So
I started putting on make-up. And they started writing, "Wow, someone
really likes being in front of the camera" and "Her hair's done now for
coffee.''

'I
couldn’t do anything right. Why am I reading this stuff?' she
complained, before confessing: 'I’m obsessed. I openly admit to being
totally insane about that.'

'I admit it happened fast, but that's who I am': The pretty blonde married tennis player Ryan, pictured here at a Pre-Grammy party in LA in January, within six months of meeting and admits she knew people would think the timing was 'ridiculous'